Let’s say you can sleep until 5, which is somewhat optimistic for many families with multiple responsibilities in the morning.

That means you have to be asleep no later than 9, which means depending on the time of year it may still be light out, and certainly the community is still fairly active. Plus I recall a recent study that essentially said teenagers are naturally night owls.

Expecting teenagers to be asleep by 9 is a losing battle.

Because it is tough for high school students to fall asleep early enough.

"In the teenage years, the hormonal response to the 24-hour daily light/dark exposure that influences circadian rhythm is altered, making adolescents physiologically yearn to stay awake later at night and to remain asleep later in the day."

https://www.neurologytimes.com/blog/teenage-circadian-rhythm

How many people did you know in school that went to bed at 10pm? I don't think I knew any.

I just slept through third period every day.